144111550 has 48 divisors (see below), whose sum is σ = 309636432. Its totient is φ = 49318400.

The previous prime is 144111521. The next prime is 144111551. The reversal of 144111550 is 55111441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144111551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1644 + ... + 17056.

It is an arithmetic number, because the mean of its divisors is an integer number (6450759).

Almost surely, 2^144111550 is an apocalyptic number.

144111550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144111550 is an abundant number, since it is smaller than the sum of its proper divisors (165524882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144111550 is a wasteful number, since it uses less digits than its factorization.

144111550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15453 (or 15448 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 144111550 is about 12004.6470168848. The cubic root of 144111550 is about 524.2835882153.

Adding to 144111550 its reverse (55111441), we get a palindrome (199222991).

The spelling of 144111550 in words is "one hundred forty-four million, one hundred eleven thousand, five hundred fifty".